Abstract
Lithographically defined iron-nickel disks 1 micron in diameter and 60 nm in thickness with a spin-vortex ground state are used to achieve magnetic field-driven light modulation by passing the light through an aqueous solution of magnetic disks with controlled orientations. We demonstrate a significant improvement of the accessible modulation frequency over 60 Hz with a single modulating magnetic field of up to 1 kHz with alternating (ac) bi-directional field. © 2012 American Institute of Physics.
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CITATION STYLE
Vitol, E. A., Yefremenko, V. G., Jain, S., Pearson, J., Rozhkova, E. A., Bader, S. D., & Novosad, V. (2012). Optical transmission modulation by disk-shaped ferromagnetic particles. In Journal of Applied Physics (Vol. 111). https://doi.org/10.1063/1.3679567
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